A properly completed, notarized general affidavit form can be useful in legal proceedings. Here's how to make sure your affidavit is valid in Texas.This document provides a comprehensive guide on how to fill out a general affidavit form. My name is___________________________________________. I am of sound mind, 18 years of age or older, and competent to give this affidavit. Listing of all TDI forms. These are the most frequently requested US Department of Labor forms. You can complete some forms online, while you can download and print all others. This research guide includes information and resources on some of the most common affidavits and declarations related to family law. Both affidavits and.